Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. Turn the Right Turn Signal on.
3. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - Test complete. The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (L60) RIGHT FRONT TURN SIGNAL DRIVER CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS
1. Turn the Right Turn Signal off.
2. Turn the ignition off.
3. Disconnect the Right Front Lamp Assembly C1 harness connector.
4. Disconnect the BCM C4 harness connector.
5. Turn the ignition on.
6. Measure the voltage between ground and the (L60) Right Front Turn Signal Driver circuit.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L60) Right Front Turn Signal Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (L60) RIGHT FRONT TURN SIGNAL DRIVER CIRCUIT FOR AN OPEN IN THE HARNESS
1. Turn the ignition off.
2. Measure the resistance of the (L60) Right Front Turn Signal Driver circuit between the Right Front Lamp Assembly C1 harness connector and the BCM C4 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the open in the (L60) Right Front Turn Signal Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (Z906) GROUND CIRCUIT FOR AN OPEN IN THE HARNESS
1. Disconnect the Right Front Lamp Assembly C2 and C3 harness connectors.
2. Using a 12-volt test light connected to 12-volts, check the (Z906) Ground circuits.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 5
  No
  - Repair the open in the (Z906) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE BCM FOR CORRECT OPERATION
1. Turn the ignition off.
2. Reconnect the Right Front Lamp Assembly C2 and C3 harness connectors.
3. Reconnect the BCM C4 harness connector.
4. Connect a 12-volt test light between the (L60) Right Front Turn Signal Driver circuit and the (Z906) Ground circuit at the Right Front Lamp Assembly C1 harness connector.
5. Turn the ignition on.
6. Turn the Right Turn Signal on.
  Does the test light blink on and off?
  
  Yes
  - Replace the Turn Signal Bulb in accordance with the Service Information. Refer to UNIT, FRONT LAMP, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the BCM in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .